Alexander Graf | 0369b2e | 2013-04-22 20:59:25 +0200 | [diff] [blame] | 1 | /* |
| 2 | * SCLP ASCII access driver |
| 3 | * |
| 4 | * Copyright (c) 2013 Alexander Graf <agraf@suse.de> |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or (at |
| 7 | * your option) any later version. See the COPYING file in the top-level |
| 8 | * directory. |
| 9 | */ |
| 10 | |
| 11 | #ifndef SCLP_H |
| 12 | #define SCLP_H |
| 13 | |
| 14 | /* SCLP command codes */ |
| 15 | #define SCLP_CMDW_READ_SCP_INFO 0x00020001 |
| 16 | #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 |
| 17 | #define SCLP_CMD_READ_EVENT_DATA 0x00770005 |
| 18 | #define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 |
| 19 | #define SCLP_CMD_READ_EVENT_DATA 0x00770005 |
| 20 | #define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 |
| 21 | #define SCLP_CMD_WRITE_EVENT_MASK 0x00780005 |
| 22 | |
| 23 | /* SCLP response codes */ |
| 24 | #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 |
| 25 | #define SCLP_RC_NORMAL_COMPLETION 0x0020 |
| 26 | #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 |
| 27 | #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 |
| 28 | #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 |
| 29 | #define SCLP_RC_INVALID_FUNCTION 0x40f0 |
| 30 | #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 |
| 31 | #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 |
| 32 | #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 |
| 33 | #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 |
| 34 | #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 |
| 35 | |
| 36 | /* Service Call Control Block (SCCB) and its elements */ |
| 37 | |
| 38 | #define SCCB_SIZE 4096 |
| 39 | |
| 40 | #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 |
| 41 | #define SCLP_EVENT_BUFFER_ACCEPTED 0x80 |
| 42 | |
| 43 | #define SCLP_FC_NORMAL_WRITE 0 |
| 44 | |
| 45 | typedef struct SCCBHeader { |
| 46 | uint16_t length; |
| 47 | uint8_t function_code; |
| 48 | uint8_t control_mask[3]; |
| 49 | uint16_t response_code; |
| 50 | } __attribute__((packed)) SCCBHeader; |
| 51 | |
| 52 | #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) |
| 53 | |
| 54 | typedef struct ReadInfo { |
| 55 | SCCBHeader h; |
| 56 | uint16_t rnmax; |
| 57 | uint8_t rnsize; |
| 58 | } __attribute__((packed)) ReadInfo; |
| 59 | |
| 60 | typedef struct SCCB { |
| 61 | SCCBHeader h; |
| 62 | char data[SCCB_DATA_LEN]; |
| 63 | } __attribute__((packed)) SCCB; |
| 64 | |
| 65 | /* SCLP event types */ |
| 66 | #define SCLP_EVENT_ASCII_CONSOLE_DATA 0x1a |
| 67 | #define SCLP_EVENT_SIGNAL_QUIESCE 0x1d |
| 68 | |
| 69 | /* SCLP event masks */ |
| 70 | #define SCLP_EVENT_MASK_SIGNAL_QUIESCE 0x00000008 |
| 71 | #define SCLP_EVENT_MASK_MSG_ASCII 0x00000040 |
| 72 | |
| 73 | #define SCLP_UNCONDITIONAL_READ 0x00 |
| 74 | #define SCLP_SELECTIVE_READ 0x01 |
| 75 | |
| 76 | typedef struct WriteEventMask { |
| 77 | SCCBHeader h; |
| 78 | uint16_t _reserved; |
| 79 | uint16_t mask_length; |
| 80 | uint32_t cp_receive_mask; |
| 81 | uint32_t cp_send_mask; |
| 82 | uint32_t send_mask; |
| 83 | uint32_t receive_mask; |
| 84 | } __attribute__((packed)) WriteEventMask; |
| 85 | |
| 86 | typedef struct EventBufferHeader { |
| 87 | uint16_t length; |
| 88 | uint8_t type; |
| 89 | uint8_t flags; |
| 90 | uint16_t _reserved; |
| 91 | } __attribute__((packed)) EventBufferHeader; |
| 92 | |
| 93 | typedef struct WriteEventData { |
| 94 | SCCBHeader h; |
| 95 | EventBufferHeader ebh; |
| 96 | char data[0]; |
| 97 | } __attribute__((packed)) WriteEventData; |
| 98 | |
| 99 | typedef struct ReadEventData { |
| 100 | SCCBHeader h; |
| 101 | EventBufferHeader ebh; |
| 102 | uint32_t mask; |
| 103 | } __attribute__((packed)) ReadEventData; |
| 104 | |
| 105 | #define __pa(x) (x) |
| 106 | |
| 107 | #endif /* SCLP_H */ |